Every single day, two NASA satellites named Aqua and Terra criss-cross the Earth, snapping thousands of photos of our planet. Quite often, clouds obscure their view. It can be a little annoying. But recently, two scientists realized that those clouds themselves can actually reveal a surprising amount about life on Earth below. In some areas, like the eastern United States or the rain forests around the equator, there’s not much variation in cloud cover from month to month. By contrast, places like India, southern Africa, or northern Australia experience massive swings in cloudiness throughout the year.
http://www.vox.com/2016/5/1/11477980/cloud-atlas-life-forests
